I see so many people adding so many led fixtures over there tank and I don’t understand why . I asked about lighting help for a new tank . It’s 72 x19x20 and I had someone say put 6 hydra 26 hd and T5 over it . What I don’t get is If I was going MH I would just put 3 250 Phoenix 14ks over it with two actinic. I would never put six . Are leds just that inadequate?